The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 5 years. As of Dec 30, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (1.131.699) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
Rankings
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
H-Index Metrics
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H-Index112
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i10 Index496
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Citation Counts49,614
Rankings
Energy Finance | Green Finance | Climate Change | Equity Market | Sustainable Developmen
H-Index Metrics
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H-Index85
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i10 Index192
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Citation Counts24,896
Rankings
Energy Engineering | Renewable Energy | Hydrogen Energy | Energy Policy | Electric Vehicl
H-Index Metrics
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H-Index62
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i10 Index168
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Citation Counts15,341
Rankings
Rankings
Rankings
Rankings
Rankings
bio-fuel | microwave reactions | green chemistry | bio-material
H-Index Metrics
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H-Index41
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i10 Index90
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Citation Counts8,430
Rankings
Rankings
Rankings
Deregulated Power System | Transmission pricing | Energy Efficiency | Renewable Energ
H-Index Metrics
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H-Index39
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i10 Index99
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Citation Counts7,308
Rankings
Rankings
Energy Recovery | Engine Boosting & Internal Combustion Engine
H-Index Metrics
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H-Index37
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i10 Index83
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Citation Counts5,408
Rankings
Solar Energy | Biofuels | Renewable Energy | Energy Efficiency and Policy | Materials
H-Index Metrics
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H-Index36
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i10 Index81
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Citation Counts10,011
Rankings
energy | wastewater treatment | anaerobic digestion | adsorbtion/coagulation | environmental technolog
H-Index Metrics
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H-Index34
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i10 Index48
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Citation Counts3,583
Rankings
Renewable Energy | Biomass | Waste-to-Energy | Energy Conversion Syste
H-Index Metrics
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H-Index33
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i10 Index70
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Citation Counts5,074
Rankings
Power System Protection | Electrical Safety | Energy Efficiency Management | Project Managemen
H-Index Metrics
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H-Index33
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i10 Index80
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Citation Counts3,472
Rankings
Renewable energy | thermal management | Li-ion battery | electric vehicl
H-Index Metrics
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H-Index33
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i10 Index79
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Citation Counts6,309
Rankings
Solar cell material | Concentrating Solar Power | Nano-materials | Environmental scienc
H-Index Metrics
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H-Index33
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i10 Index66
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Citation Counts3,506
Rankings
Membranes | polymers | nanomaterials | CO2 capture | water treatmen
H-Index Metrics
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H-Index32
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i10 Index39
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Citation Counts3,677
Rankings
solar cell | materials | semiconductor | devices | nanotechnolog
H-Index Metrics
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H-Index32
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i10 Index121
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Citation Counts4,112
Rankings
Applied Energy | Hydrogen & Fuel Cell | Sustainable Fuels | Waste-to-Energy | HVAC&
H-Index Metrics
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H-Index30
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i10 Index49
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Citation Counts4,225
Rankings
Renewable Energy | Thermoacoustics | Heat Transfer | Air-conditioning | Pyrolysi
H-Index Metrics
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H-Index30
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i10 Index60
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Citation Counts2,734
Rankings
Power System Analysis | System Security | Voltage Stabilit
H-Index Metrics
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H-Index30
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i10 Index43
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Citation Counts5,148
Rankings
Phase Change Materials | Salt Hydrate | Advanced Nanomaterial | Solar Thermal Systems | Renewable Energ
H-Index Metrics
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H-Index29
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i10 Index48
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Citation Counts2,942
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